1

What is CP:
You certainly need to discuss this with your phyician . This group of signs and symptoms may have a very simple explanation. Also they may all not be related. I'm not certain what you mean by CP. Your physician should help clarify how much of each of these symptoms is been a related and what the cause maybe
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5

See orthopedics :
Because of your past history of giant cell tumor it is important to find out why the knee is swollen. It is normal for muscles around a joint to become weak and lose mass if the joint is painful or has loss of function. You should see an orthopedics surgeon soon.
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6

Benign tumor:
Tumor of lower leg that has not grown or showed signs of malignancy such as metastasis are usually benign. They become of concern when reaching 5-10 cm. in size when nodal lesions noted but rare when pain noted especially on walking. Must rule out some form of claudication unless pain directly related to pressure on lesion.
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7

Exercise the muscle:
Muscle will respond with enlargement when exercised properly. You didn't say above or below the knee, but try squats, walking against resistance, and movement with resistance. Don't forget to stretch.
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8

Cyst:
A Baker's cyst is a common finding in cases with a mass behind the knee and could be described as mentioned above. These are benign and are usually referred to an orthopedic surgeon for evaluation and treatment.
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9

No:
tumors of the leg are by definition arising from muscle or connective tissue. One can have a large fibroma, or lipoma. By definition, if there is a sarcoma and you leave it alone, it will grow on you. Malignant sarcomas become aggressive over a short period of time and tend to metastasize to lung. If a benign lesion changes growth pattern then biopsy is always indicated due to transformation.
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10

NEEDS I&D of abcess:
A 'painful mass' is a sign of an abcess and the best treatment is 'incision & drainage' (I&D) of the infected material. Please get seen for this procedure. Antibiotics usually can not cure a large abcess, sorry. Hope you are better soon!
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13

Calf mass:
If u have a calf mass for four years , is it painful,growing , firmly fixed to adjacent tissues?If yes then you should be seen by an experienced lower extremity surgeon. The evaluation before undergoing a biopsy is important and should be done by the ultimate treating surgeon.
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17

Nothing vs ER:
Statistically, this could be life threatening if not evaluated ie a DVT or blood clot, especially if pain is getting worse or size getting bigger. Get evaluated asap either at er, urgent care or your sports medicine doctor.
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